[CIR] Add Plus and Minus to Unary

Author: cmarcelo

clang/include/clang/CIR/Dialect/IR/CIROps.td

@@ -543,14 +543,18 @@ def ScopeOp : CIR_Op<"scope", [DeclareOpInterfaceMethods<RegionBranchOpInterface
 // UnaryOp
 //===----------------------------------------------------------------------===//
 
-def UnaryOpKind_Inc : I32EnumAttrCase<"Inc", 1, "inc">;
-def UnaryOpKind_Dec : I32EnumAttrCase<"Dec", 2, "dec">;
+def UnaryOpKind_Inc   : I32EnumAttrCase<"Inc",   1, "inc">;
+def UnaryOpKind_Dec   : I32EnumAttrCase<"Dec",   2, "dec">;
+def UnaryOpKind_Plus  : I32EnumAttrCase<"Plus",  3, "plus">;
+def UnaryOpKind_Minus : I32EnumAttrCase<"Minus", 4, "minus">;
 
 def UnaryOpKind : I32EnumAttr<
     "UnaryOpKind",
     "unary operation kind",
     [UnaryOpKind_Inc,
-     UnaryOpKind_Dec]> {
+     UnaryOpKind_Dec,
+     UnaryOpKind_Plus,
+     UnaryOpKind_Minus]> {
   let cppNamespace = "::mlir::cir";
 }
 
@@ -561,7 +565,7 @@ def UnaryOp : CIR_Op<"unary",
   let summary = "Unary operations";
   let description = [{
     `cir.unary` performs the unary operation according to
-    the specified opcode kind: [inc, dec].
+    the specified opcode kind: [inc, dec, plus, minus].
 
     Note for inc and dec: the operation corresponds only to the
     addition/subtraction, its input is expect to come from a load

clang/lib/CIR/Dialect/IR/CIRDialect.cpp

@@ -1314,6 +1314,12 @@ LogicalResult UnaryOp::verify() {
     return emitOpError() << "requires result to be used by a memory store "
                             "to the same address as the input memory load";
   }
+  case cir::UnaryOpKind::Plus:
+    // Nothing to verify.
+    return success();
+  case cir::UnaryOpKind::Minus:
+    // Nothing to verify.
+    return success();
   }
 
   llvm_unreachable("Unknown UnaryOp kind?");